#3 to 12mm Adapter Fittings (2pk) Uniflare

The #3 to 12mm Adapter Fittings (2pk) Uniflare by EARLS delivers reliable hydraulic and pneumatic line connections for automotive, marine, and industrial applications where AN and metric standards must interface seamlessly. This two-pack straight adapter enables technicians and enthusiasts to bridge legacy #3 AN male ports with modern 12mm x 1.00 male inverted flare systems, eliminating the need for costly custom fabrication or system redesigns. Whether upgrading fuel systems, brake lines, or transmission coolers, these adapters solve real-world compatibility challenges in high-performance builds and restoration projects.

Constructed from steel and finished with nickel plating, each adapter provides corrosion resistance and durability in demanding environments while maintaining structural integrity under pressure. The inverted flare (bubble flare) design on the 12mm side ensures a positive, leak-free seal that meets ISO and metric standards, while the #3 AN male port accepts standard SAE flare fittings. The straight configuration minimizes flow turbulence and pressure loss, critical for fuel delivery and brake system performance. Nickel plating protects against rust and oxidation without compromising the precision machining required for consistent thread engagement.

Ideal for restoration shops, custom fabricators, and DIY builders working on mixed-specification systems, these adapters are essential for vehicles with euro-spec components or upgrades sourced internationally. Installation is straightforward—hand-tight plus wrench turns with appropriate sealing compound ensures compliance and prevents leaks. The two-pack format accommodates dual-line applications (fuel supply and return, or redundant brake circuits) or provides a spare for future maintenance. Compatible with any system using #3 AN male and 12mm male inverted flare ports, these fittings integrate directly into existing setups without modification.